Preparation of high performance metal protection nano coating

Abstract

A method for preparing a high-performance metal protection nanometer coating includes the following steps of: ball-milling diluter and nanometer oxide particles according to the weight ratio of 40-100:1 to obtain nanometer oxide suspension; measuring acrylic ester and remaining copolymerization monomers according to the weight ratio of 2-3:1 to obtain a mixed monomer, adding the nanometer oxide suspension accounting for 80 percent of the total weight of the mixed monomer and adding reaction additives to obtain a mixture which is stirred for 10min to obtain in-situ polymerization precursor liquid. Under nitrogen protection, 10 percent of the in-situ polymerization precursor liquid is added into a reaction container, within the reaction time of 1-8h, the rest 70-90 percent of the in-situ polymerization precursor liquid is dipped, and after the dripping is over, the temperature of the reaction system is raised to 90 DEG C and kept for 0.5-2h; and nanometer oxide-acrylics is obtained after adding pH regulator and stirring for 5-10min. With epoxy resin and assistant and the like added, the metal protection nanometer coating is prepared in a ball milling method.

Description

technical field [0001] The invention relates to a preparation method of a high-performance metal protective nano coating, in particular to the preparation and coating of a metal protective nano coating and the application of the coating in the field of metal protection. Background technique [0002] Metal materials are one of the most important engineering materials and are widely used in various fields of national economic construction. In practical applications, due to the corrosion of various acids, alkalis and salts in the environment and the erosion of humid environments, metal materials will lose their original luster and aesthetics, and their appearance properties will be severely damaged. As the corrosion spreads to the inside of the metal matrix and the degree of corrosion intensifies, the metal material will lose its original complete structure and excellent performance, eventually leading to safety accidents. Although replacing corroded metal materials in advance...

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Problems solved by technology

Although this method is simple in process, the dispersion uniformity of nanoparticles in the coating is poor, and it is difficult to improve the performance of the coating.

Although there are studies to prepare nano protective coatings by hydrolyzing oxide precursors in situ to generate modified oxide gel resins (see Chinese patent CN101307194), this is only limited to the in situ preparation of inorganic oxide phases, and this The industrial bottleneck of the method is that the surface modification of the generated nano-oxides is very difficult

At present, the production and surface modification of many nano-oxide particles have been commercialized, but for the direct pre-dispersion of surface lipophilic nano-oxide particles in a diluent, and then in-situ polymerization in the suspension to generate acrylic acid Resin, and then mixed with epoxy resin, diluent and additives to prepare nano-oxide-acrylic-epoxy resin coating, and finally apply the coating to the surface of the clean metal substrate, and heat and cure to form a high-performance metal protection The preparation method of nano coating has not been reported

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